NOAA’s three Great Lakes research vessels have again been honored for the conversion from petroleum-based fuels and lubricants to bio-based products. The Office of the Federal Environmental Executive announced that the NOAA Great Lakes Environmental Research Laboratory in Ann Arbor, Mich., has won a White House Closing-the-Circle Award in the green purchasing category. In 2006, the initiative won an award from the U.S. Dept. of Energy.